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Quiz

1/10
What happens when you attempt to compile and run the following code? #include <iostream> #include <set> #include <vector> using namespace std; int main(){ int t[] ={ 3, 4, 2, 1, 6, 5, 7, 9, 8, 0 }; vector<int>v(t, t+10); multiset<int> s1(v.begin(),v.end()); s1.insert(v.begin(),v.end()); pair<multiset<int>::iterator,multiset<int>::iterator> range; range = s1.equal_range(6); while (range.first != range.second) { cout<<*range.first<<" "; range.first++; } return 0; }
Select the answer
1 correct answer
A.
program outputs: 6 6
B.
program outputs: 5 7
C.
program outputs: 5 5 6 6 7 7
D.
program outputs: 5 5 7 7
E.
program outputs: 1 1 6 6 5 5

Quiz

2/10
What happens when you attempt to compile and run the following code? #include <vector> #include <iostream> #include <algorithm> using namespace std; template<class T>struct Out { ostream & out; Out(ostream & o): out(o){} void operator()(const T & val ) { out<<val<<" "; } }; struct Sequence { int start; Sequence(int start):start(start){} int operator()() { return start++ ; }}; int main() { vector<int> v1(10); generate(v1.rbegin(), v1.rend(), Sequence(1)); rotate(v1.begin(),v1.begin() + 1, v1.end() ); for_each(v1.begin(), v1.end(), Out<int>(cout) );cout<<endl; return 0; } Program outputs:
Select the answer
1 correct answer
A.
1 2 3 4 5 6 7 8 9 10
B.
10 9 8 7 6 5 4 3 2 1
C.
9 8 7 6 5 4 3 2 1 10
D.
1 10 9 8 7 6 5 4 3 2

Quiz

3/10
What happens when you attempt to compile and run the following code? #include <iostream> #include <fstream> #include <string> #include <list> #include <algorithm> #include <iomanip> using namespace std; class B { int val; public: B(int v=0):val(v){} int getV() const {return val;} operator int() const { return val; };}; template<class T>struct Out { ostream & out; Out(ostream & o): out(o){} void operator() (const T & val ) {out<<setw(3)<<hex<<val; } }; int main () { int t[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; fstream f("test.out", ios::trunc|ios::out); list<B> l(t, t+10); for_each(l.begin(), l.end(), Out<B>(f)); f.close(); f.open("test.out"); for( ; f.good() ; ) { B i; f>>i; cout<<i<<" "; } f.close(); return 0; }
Select the answer
1 correct answer
A.
file test.out will be opened writing
B.
file test.out will be truncated
C.
file test.out will be opened for reading
D.
compilation error
E.
program will display sequence 1 2 3 4 5 6 7 8 9 10

Quiz

4/10
What will happen when you attempt to compile and run the code below, assuming that you enter the following sequence: one two three<enter>? #include <iostream> #include <string> using namespace std; int main () { string a; cin>>a; cout<<a<<endl; return 0; } Program will output:
Select the answer
1 correct answer
A.
one
B.
one two three
C.
runtime exception
D.
compilation error
E.
the result is unspecified

Quiz

5/10
What will happen when you attempt to compile and run the following code? #include <iostream> #include <map> #include <vector> #include <sstream> #include <string> using namespace std; int main() { int t[] = { 3, 4, 2, 1, 0, 3, 4, 1, 2, 0 }; vector<int> v(t, t + 10); multimap<int, string> m; for (vector<int>::iterator i = v.begin(); i != v.end(); i++) { stringstream s;s << *i << *i; m.insert(pair<int, string>(*i, s.str())); } pair<multimap<int, string>::iterator, multimap<int, string>::iterator> range; range = m.equal_range(2); for (multimap<int, string>::iterator i = range.first; i != range.second; i++) { cout << i?>first << " "; } return 0; } The output will be:
Select the answer
1 correct answer
A.
2 2
B.
1 2
C.
1 3
D.
2
E.
0 2

Quiz

6/10
What happens when you attempt to compile and run the following code? #include <vector> #include <iostream> #include <algorithm> using namespace std; class B { int val; public: B(int v):val(v){} int getV() const {return val;} bool operator < (const B & v) const { return val>v.val;} }; ostream & operator <<(ostream & out, const B & v) { out<<v.getV(); return out;} template<class T>struct Out { ostream & out; Out(ostream & o): out(o){} void operator() (const T & val ) { out<<val<<" "; } }; int main() { B t1[]={3,2,4,1,5}; B t2[]={5,6,8,2,1}; vector<B> v1(10,0); sort(t1, t1+5); sort(t2, t2+5); set_intersection(t1,t1+5,t2,t2+5,v1.begin()); for_each(v1.begin(), v1.end(), Out<B>(cout));cout<<endl; return 0; } Program outputs:
Select the answer
1 correct answer
A.
compilation error
B.
1 2 3 4 5 6 8 0 0 0
C.
1 2 3 4 5 6 8 2 1 0
D.
5 2 1 0 0 0 0 0 0 0
E.
1 2 5 0 0 0 0 0 0 0

Quiz

7/10
What happens when you attempt to compile and run the following code? #include <list> #include <vector> #include <iostream> using namespace std; int main () { int t[] = {1, 2 ,3 ,4 ,5}; vector<int>v1(t, t+5); list<int>l1; l1.assign(v1.end(), v1.begin()); for(int i=0; i<l1.size(); i++) { cout<<l1.at(i)<<" "; } cout<<endl; return 0; }
Select the answer
1 correct answer
A.
program displays 5 4 3 2 1
B.
program displays 1 2 3 4 5
C.
compilation error
D.
segmentation fault runtime exception

Quiz

8/10
What happens when you attempt to compile and run the following code? #include <vector> #include <iostream> #include <algorithm> using namespace std; class B { int val; public: B(int v):val(v){} int getV() const {return val;} bool operator < (const B & v) const { return val<v.val;} }; ostream & operator <<(ostream & out, const B & v) { out<<v.getV(); return out;} template<class T>struct Out { ostream & out; Out(ostream & o): out(o){} void operator() (const T & val ) { out<<val<<" "; } }; int main() { B t1[]={3,2,4,1,5}; B t2[]={6,10,8,7,9}; vector<B> v1(10); sort(t1, t1+5); sort(t2, t2+5); merge(t1,t1+5,t2,t2+5,v1.begin()); for_each(v1.begin(), v1.end(), Out<B>(cout));cout<<endl; return 0; } Program outputs:
Select the answer
1 correct answer
A.
1 2 3 4 5 6 10 8 7 9
B.
3 2 4 1 5 6 7 8 9 10
C.
3 2 4 1 5 6 10 8 7 9
D.
1 2 3 4 5 6 7 8 9 10
E.
compilation error

Quiz

9/10
Which sentence is correct about the code below? #include <iostream> #include <algorithm> #include <vector> using namespace std; class A { int a; public: A(int a) : a(a) {} int getA() const { return a; } void setA(int a) { this?>a = a; } /* Insert Code Here */ }; struct add10 { void operator()(A & a) { a.setA(a.getA() + 10); } }; int main() { int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 }; vector<A> v1(t, t + 10); for_each(v1.begin(), v1.end(), add10()); vector<A>::iterator it = find(v1.begin(), v1.end(), A(7)); cout << it?>getA() << endl; return 0; }
Select the answer
1 correct answer
A.
it will compile and print 7
B.
it will not compile
C.
it will compile but the program result is unpredictable
D.
adding code: bool operator !=(const A & b) const { if (this?>a != b.a) { return true; } return false; } at Place 1 will allow the program to compile

Quiz

10/10
What happens when you attempt to compile and run the following code? #include <iostream> #include <algorithm> #include <vector> using namespace std; void myfunction(int i) { cout << " " << i; } void multiply (int a) { a*2; } int main() { int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 }; vector<int> v1(t, t+10); for_each(v1.begin(), v1.end(), multiply); iter_swap(v1.begin(),t+9); for_each(v1.begin(), v1.end(), myfunction); return 0; } Program outputs:
Select the answer
1 correct answer
A.
1 5 9 6 2 4 7 8 3 1
B.
compilation error
C.
1 2 3 4 5 6 7 8 9 10
D.
10 9 8 7 6 5 4 3 2 1
E.
10 5 9 6 2 4 7 8 3 1
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  • Quiz name:C-plus-plus-Institute-CPP
  • Total number of questions:228
  • Number of questions for the test:50
  • Pass score:80%

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